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33 Gas Saving Tips - Best Gas Mileage - Dump Gas Savers
1. Keep your tires properly inflated.
Buy a quality tire gauge and check the pressure of your tires before you start.... remember to check while they're cold and do it at least once a month. When your tires are under-inflated, they require much more horsepower to rotate, thus consuming more gas. Most cars have a label that lists proper tire pressure, usually on a plate attached to the drivers door. Your owner's manual has the original tire specifications and required inflation pressures also, as long as you haven't changed tire sizes, these are the numbers you want to target.

2. Lighten up and don't haul anything you don't absolutely need, around with you.
Check your trunk, glove box and front and back seats for belongings that you really don't need on a permanent basis. This won't save you a fortune (unless you have a habit of driving with the full trunk all the time) - but with gas prices headed closer to the $4.00 mark, it does save enough to consider an automotive clean out, and it doesn't cost a dime.